This study aimed to explore effective art therapy strategies by investigating how art therapists construct sessions for children abused by their parents. To this end, a researcher first surveyed the traits of abused children during the art therapy sessions and observed how these traits changed over the course of therapy. The researcher then examined the strategies that art therapists utilized as intervention methods. For this study the participants were five art therapists who had several years of experience in treating victims of child abuse. The data were collected through one-on-one interviews and analyzed based on Charmaz’s constructivist grounded theory. In total, 105 categories were derived in the initial coding and 34 categories in the focus coding; ultimately, a theoretical paradigm that comprised 11 categories of theoretical coding was derived. The observed characteristics of abused children can be summarized as “maladaptive sensory responses,” “negatively biased cognition,” “mixed emotions about parents and self,” and “life swayed by situations.” The effects of the art therapy could be summarized as changes in children, such as “acknowledging and letting go,” “having a sense of positivity,” and “owning one’s life.” In addition, these changes were identified as being made through strategic interventions, such as “establishing a therapeutic relationship,” “growing the client in a relationship with a mature therapist,” “increasing emotional stability,” and “creating resources.”